Sub-car-floor-operating device for elevator doors



F. F. BRUSH SUB CAR FLOOR OPERATING DEVICE FOR ELEVATOR DOORS 2 Sheets-Sheet Filed April 11 jVf'OF: fFPEDER/(K fr 5205/1,

Patented Sept. 15, 1925.

UNITED srArss PATENT OFFICE.

FEEDER! Fl BRUSH, OF LO S AL'NIG ELES, fiALIBORNIA, ASS-IGNOR TO IEILEVATOYRI SAFETY APPLIANCE COMPANY; A GDRPORATION OF CALIFORNIA.

SUBW-ELOOBrOPEBATING DEVICE F0131 ELEVATOR DOORS.

Application filedv Aprilv 11,

To all whom it may concern.-

Be it known that I, FnnnnRIoK F. BRUSH, a citizen of theUnited' States, residing at Los Angeles, in the county of Los Angeles and. State of California'have invented a newand, useful Irn rove nent Comprising the S ub-car-Floors perating Device for El'e-l vator. Doors, of which the following is a specification.v

My invention relates to elevator door op,- erating devices which. are carried on an. elevator car and utilized toopen. the doors at, the various floors served by the elevator- The object of myinvention. is to providean. elevator door operating devicewhich may be. carried. under the floor of the can thus giving a. superior distribution of weight and. additional, safety features. By so mounting the device I am also able to. provide ease of, inspection, concealment, and to. render any .noise reduced. less obieotionable-than where, such evices are mounted on. top. ofjthe car as. is at present the custom.

A further object oi the? inventionis to; pr v de n ev r or operat ng hi h an be located ben ath he fl o per ting he d o than a slo te lthreshold. A til i rther objec of the in ention is a pr ide an. e e o o r operating de seich can be o oca ed that. it. wi l out .1. at Sigh a th rather unsightly mechani.- cal parts,,being concealed; below the floor of he ar th s-al owing the ornate PI'LQ.

1.... n. m y evat rs to becmaintained with t hange.

A. still; further object of the invention, is toprovide operating fingers onthe elevator.- wlne flfifis lihl'OWll .out. to engage; pro ec taons; which operate the door, these fingers being Q 'CQBSWHC Bd thatv they are pulled: back Within the: clearance line of. thercar. atalil timese cept whenv the car is at a. floor and. the fingms are; being need to operate the Astili tunthen objectiottheinvention is 1923. Serial no 631,382.

Fig; 3 is a view of the car as seen from below.

Fig. 4. is a view of the door with the cross head mounted, below the threshold.

Fig. 5 is a. diagram of connections.

In the form of the invention illustrated, a. plurality of floors 11 are shown, all being served-by means of a. car 12. This car moves vertically in a. hatchway. Mounted beneath the car is-an operating. motor having a shaft 21 on which fisplaced a worm 22., This worm engages a worm gear 23 carried on a segment 24 pivoted on a pin 2-5. A multiplying lever 26- ispivoted on a pin 27 on the segment. 2%, being also pivoted at 28 to. a. floating link 29 pivoted to the floor 30 of the car. On the; opposite end of the lever- 26- is. a. pin 32 which. is carried ina head 33 which slidesin guides 34 on. the bottom of. the car. It should be noted. that the; proportion and arrangement, of the parts is such. that the pin 32 moves in; av straightv line; Pivoted on. pins in the head are 7 ers 41: which are normally held in their open position. as shown in full lines.

in .1 ig. 3. by means ofa tension spring 42. A solenoid 4:5 is so; placed as to magnetically attract, cores 4L6, carried on the fingers 4:1 to pull these, fingers into. their closed, position, shown in dotted lines in.I.ig, 3. WVhen pulled into this position, they engage projections 50-, the endsof the plungers 4.6 striking against a fixed. stop: inside, the. solenoid 45 so that they are properly centered with relation to the head. The projections are carried. on. a draw bar 51', sliding in; a cross head, 52 which is secured below the floor 11,

being connected thru-an operating bar 58 c at. each? floor.

Switches; 60,. 61. and 62 are; provided;

these; switches being normally closed; and

opened by the segment 24 at either end of its travels as will hereinafter be explained.

In the diagram Fig- 5 the main sw tch 7 0 is shown controlling all the circuits. door controller 71 is shown diagrammatically. This controller has fixed fingers 80 contacting with moving segments 81. When the controller is in its open position the fingers 80 rest on a line AA and when in its closed position, the fingers 80 rest on a line BB. This controller being placed at any convenient point in the car and being used to control the opening and closing of the door.

The method of connection and method of operation can be described together.

With the parts in the position shown at Fig. 3, the door is supposed to be closed, the car having just reached the floor at which this particular door is located. The coil 84 of the solenoid 45 is not energized due to the fact that the switch 62 is open and the controller 71 is on the closed side, with the fingers 80 resting on the segments 81 on the line B-B, this controller being provided with a spring which normally holds it in a closed position.

The armature 82 and the field 83 of the motor 20 are also open due to the fact that the switch 61 is open, the segment 24 resting thereon and holding it open. If now the operator wishes to open the door, he throws the controller 71 into the open position with the fingers 80 resting on segments 81 along the line AA. This establishes a circuit from the positive side of the circuit thru a wire 100 with the finger coil 84 thru a wire 101 with a finger 102 in the controller 71. The circuit is then established thru segments 103 with a finger 105 and a wire 104 connected to the negative side of the circuit. The coil 84 is thus energized and the solenoid 45 moves the fingers 41 from the position shown in full lines in Fig. 3 into the position shown in dotted lines in that figure, thus closing the fingers 41 on theprojections 50. At the same time a circuit is established thru a wire 110, the switch 60, and a wire 111 with a finger 112 of the door controller 71. Segments 113 connect the finger 112 with a finger 114 which is connected thru a wire 115 with a finger 116. This finger contacts with a segment 117 which is connected thru a wire 118 with a segment 119, the segment 119 contacts with a finger 120 connected through a wire 109 to the armature 82 of the motor 20. The other side of this armature being connected to a finger 121 which contacts with a segment 122 connected thru a wire 123 with the segment 124. This segment contacts with a finger 125 connected thru awire 126 With the field 83 of the motor which is connected thru a wire 127 and a wire 130 to the wire 104 from the other side of the circuit. The establishing of these circuits cause the armature 82 to rotate, moving the segment 24 in a counter clock direction as viewed in Fig. 3. The initial moving of this segment closes the switch 62 which establishes a circuit thru a wire 130 from the negative side of the circuit thru the finger coil 84 to the positive side of the circuit thru the wire 100. The finger coil is then energized until the switch 62 is opened which occurs just before the segment 24 reaches the position shown in full lines in Fig. 3 at the end of the closing stroke. Until this time the finger coil is energized thus causing fingers 41 to maintain the position shown in dotted lines in Fig. 3. These fingers are first moved from left to right as viewed in Fig. 3 across the floor of the car moving the projections 50 and actuating the door 54 thru the operating bar 53. Just before the door reaches its wide open position the switch 60 is opened thus opening the circuit thru the motor which stops. The fingers retain their gripon the projections 50 due to coil 84 being energized through the switch 62. lVhenever the operator releases the door controller 71, this controller is returned to the closing position under the influence of its closing spring 71. The fingers 80 then shift to make contact along the line BB. The switch 61 is closed having been closed soon after the door started to open. The circuit is completed from the positive side through the wire 110 and the switch 61 and through a wire 130 to a finger 131, thence through segments 132 to a finger 133 and through the wire 115 to the finger 116. Finger 116 is connected to a segment 140 and through a wire 141 to a segment 142 which is in contact with a finger 121. This finger is connected to one side of the armature 82, the other side being connected through a wire 109 with the finger 120. This finger is in contact with a segment 150 connected through a wire 151 with a segment 152 in contact with the finger 125. This finger is connected through the wire 126 with the field 83 which is connected through wire 127 with the negative side of the circuit.

This method of connection energizes the motor 20 to move the segment 24 in a clockwise direction. This first closes the switch 60 andthen closes the door, the switches 61 and 62 opening just as the door finishes closing. The opening of the switch 61 deenergizes the motor 20 and the mechanism stops. The opening of the switch 62 deenergizes the coil 84 and the fingers 41 fiy apart into the position shown in full lines in Fig. 3 under the influence of the spring 42. This completesthe cycle and the car is free to go on its way.

I claim as my invention:

1 1. In an elevator for a building structure;

a floor forming a portion of said structure; a door closing a doorway at said floor; a projection on said door extending downwardly through a slot in said floor; and members below said floor connected to said projection.

2. In an elevator for a building structure; a floor forming a portion of said struc ture; a door closing a doorway at said floor; a projection on said door extending downwardly through a slot in said floor; and a driving mechanism utilized below said floor to engage said projection.

3. In an elevator for a building structure; a floor forming a portion of said structure; a door closing a doorway at said floor; a projection on said door extending downwardly through a slot in said floor; members below said floor connected to said projection; a car moving vertically past said floor; operating mechanism carried below the floor of said car; and means for connecting said mechanism to said members.

4. In an elevator for a building structure; a floor forming a portion of said structure; a door closing a doorway at said floor; a projection on said door extending down wardly through a slot in said floor; members below said floor connected to said projection; a car moving vertically past said floor; operatin mechanism carried below the floor of said car; and means for connecting said mechanism to said members only when the floor of said car is within a predetermined distance from said floor.

5. In an elevator for a building structure; a fioor forming a portion of said structure; a door closing a doorway at said floor;

a projection on said door extending downwardly through a slot in said floor; members below said floor connected to said projection; a car moving vertically past said floor; operating mechanism carried below the fioor of said car; a motion multiplying lever connected to said mechanism; and means for connecting said lever to said members.

6. In an elevator; a car; a door at each floor closing a doorway into said car; mech anism carried on said car; and ahorizontally disposed motion multiplying lever carried on said car operated by said mechanism and having associated therewith horizontally extensible engagement means for operating said door.

7. In an elevator; a car; a door at each floor closing a doorway into said car; mechanism carried beneath the floor of the car on said car; and a horizontally disposed motion multiplying lever carried on said car operated by said mechanism and having associated therewith horizontally extensible engagement means for operating said door.

8. In an elevator; a building structure; a car moving in said structure; doors sliding in said structure; mechanism carried underneath said car for moving said doors; and fingers operated by said mechanism and carried on said car for gripping a projection on each door, said fingers swinging back inside the clearance line of said car when not in use.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 5th day of April, 1923.

FREDERICK F. BRUSH. 

